Al Gore on the decade of climate action

The former US vice president has been pushing for climate action for decades. In this interview he says we are at a 'political tipping point' after which polluters will no longer hold sway, but admits that greenhouse gas emissions are still growing faster than any action to cut them back to zero.   This is an edited version of an interview first published on the World Economic Forum's Meet the Leader podcast. Interview by Linda Lacina.